anaconda crash in rescue mode

["Dawei Pang" <pangdae@xxxxxxxxx>]

Hi,

  I use rhel3 update8 in my x86 machine.When I enter rescue mode, after choose mount old system to /mnt/sysimages, the anaconda show crash strace as follows:
  Traceback(most recent call last):
     File "/usr/lib/anaconda", line 586, in ?
        rescue.runRescue(rootPath, not rescue_nomount, id)
     File "/usr/lib/anaconda/rescue.py", line 441 in runRescue
        runShell()
     File "/usr/lib/anaconda/rescue.py", line 168, in runShell
        fcntl.ioctl(0,termios.TIOCSTTY)
  IOError: [Errno 1] Operation not permitted

I do not know why operation not permiited.
I note that there is not runShell() in the RHEL3u7.
Can I use try-except to accept the exception so that pass it
what means is the fcntl.ioctl(0,termios.TIOCSTTY)
please help me.
Thank you very much.